Speeder.



No. 836,707. PATENTED NOV. 27, 1906.

E. RICHTER.

SPEEDER.

APPLICATION FILED APR-17.1900.

2 SHEETSSHEET 1.

Witnesses: Inventor z fi? w.% 4.8. V [rug Attorne No; 836,707. PATENTED NOV. 27, 1906. E. RICHTER.

SPEEDER.

APPLICATION FILED APR.27.1906.

2 SHEETSSHEBT Witnesses: I lnvantor 14$ ULL%2 E a. Attorney UlhlGlllllA'll, OHIOKASSIGNUR TU THE G. A. GRAY UUMPANY, 0F ClNUl'llhl'ATl? Gilli).

$PEEDEF1= .Trlo. Speoification of letters flatent; l atented Nov, 2'7, 190?.

Application filed April 27, 1906 Qorlal lilo. 818.966-

I/ it may concern.-

a that I, Ennsr Krone-an, a citited States, residing at Cinc m on eounty, (line, have invented ,v and useful Improvements in onion o lo. owing is a spec invention, pertaining to improvepeeders of the stepped-pulley type, 13y understood from the following drawings, in which a plan. of a Speeder exemplifying lel'leiGl l' Fig. 2, a vertical section there elevation of the shifting-cam, grain of the cam.

lined bearin thereon; 3, a shaft journaledin these hearings; i, a pulley on the shaft; 5, bearings sliding on the housin to and from the bearings 2; 6, a shaft journa ed in the sliding bearings; 7, a pulley on this shaft; 8, a stepped pulley on shaft 3; 9, a reverselystepped pulley on shaft 6; l0, beveled shoulders be i on the pulley-steps; 11, screws for adjustl e sliding bearmgs; 12, an adjustcg a gearing connecting the adjusting-shalt th the screws; 14, a cdain-wheel on the ad sting 'shaft, serving to illustrate typical 1 eans for turning the adjustingshaft; 15, guide-rods fixed parallel with the axes of the shafts and disposed between the two st ed pulleys, one pair of the guideods b disposed to one side and another pair to ti other side of the common plane of the axes of the stepped pulleys 16, a belts1 liter sliding on one pair of guide-rods and cooper with stepped pulley 9; 17, a beltshi'fter on the other pair of guide-rods and co no ng with the other stepped nulle Ollc o, ose belt-shifters operating a ong one side 0 ts stepped pulley, while the other belt-sh operates along the opposite side of the o a. stepped pulley 18, a cylindrical earn mounted for rotation between the two stepped pulleys and between the two pairs of guide-rods 19, a groove, partly circumferential and partly helical, in the periphery of the cam; 20 w chain-wheel on the cam, serving to illustrat typical means by which the. cam may be nod, and 21 arms projecting rigidly iron 1e belt-shifters and armed at their ends, pie rably, with rollers engaging the groove tne earn.

- slackening the belt.

, taken in connection with the acings, 1 indicates a housing; 2, v

1 engagement wit Assume a belt engagin appropriate steps of ,the two stepped pu leys and passing through the belt-shifters and under proper tightness for good working; When spee is to be charmed, then by obvious manipulation the-sliding ones are afidijlusted inwardly, thus in proper direction, and the first effect is to advance the proper belt-shifter toward the next smaller step of its stepped pulley, shifting the belt onto thesrnaller step. The n'ext etfect of the turnin of, the cam is to shift the belt uponthe 0t er stepped pulley onto the next and larger step, the belt being thus brought into line upon two new steps. The sliding boxes are then to be moved outwardly, thus retightening the belt. I

The device permits of peculiar facility for the chan ing of speeds in situations even where be ts are very wide. and heavy, and it well lends itself to compactness by reason of the extremely short distance permissible between shaft centers, it being onlyrequisite to rovide room for the cam. its between the shafts of the two stepped pulleys either may be the driving or the driven shaft.

ll clairn- 1. A s eeder comprising a housing, a shaft journals therein, a pair of bearings arranged to slide to and from the shaft, a shaft journaled in the slid'mg bearings, means for adjusting the sliding bearings, reversely-stepped pulleys on the two shafts, the shoulders at the ste junctures being beveled, an independent be t-shifter arranged to traverse each stepped pulley, ides for the belt-shifters, a rotatable eyiin 'cal cam havin a groove partly circumferential and partly helical, and parts projectingltrom the belt-shifters into the groove of the earn.

2-. A s eeder comprising a housing, a shaft journale therein, a pair of bearings arranged to slide to and from the shaft, a shaft journaled in the sliding bearings, screws enga ing the sliding bearings, an adjustingshaft eared to the screws, reversely-stepped puleys on the two shafts, the shoulders at the step junctures being beveled, an independent belt-shifter arranged to traverse each stepped ulley, guides for the belt-shifters, a rotatalile cylindricaloani having a groove partly circumferential and part1 helical, and parts projecting from the belt-s ifters into engagement with the grbove of the cam.

e carn'is then turned thus ICC

theealm.

jeurnale naled in the sliding bearings, means forecljus ting the sliding bearings, 'reversely-stepped pulleys on the two shafts, the shoulders at, the-step junctures being beveled, an hide-- pendent belt shifter arranged to traverse each stepped "pulley, guides for the beltshifters, a rotatable cylindrical cam disposed between the two stepped pulleys and having e woove partly circumferential and partly be ioa il, imd perts projeoting from the shifters intoengagement with the groove of a housing, a shaft 4. Afigeeder comprisin therein, a; o bearings errenged belt-- to slide to and from the naled in the sliding justing the sliding bearings, reverseb -stepped pulleyson the two shafts, the shoulders at the step junctures being beveled, an independent belt-shifter arranged to traverse each stepped ulley, two pairs of rods supported by the ousing and serving as guides for the be1t-shifters, a rotatable cylindrical cam having a groove ertly circumferentiel and partly helical, and parts projecting'from the belt-shifters into engagementwith the groove of the cam.

shznt, a shaft j our ERNST Witnesses:

HENR 'NQLRX, Imogen bearings, means for ed- 

